PMID- 35684545
OWN - NLM
STAT- MEDLINE
DCOM- 20220613
LR  - 20220716
IS  - 1420-3049 (Electronic)
IS  - 1420-3049 (Linking)
VI  - 27
IP  - 11
DP  - 2022 Jun 4
TI  - Biocementation of Pyrite Tailings Using Microbially Induced Calcite Carbonate 
      Precipitation.
LID - 10.3390/molecules27113608 [doi]
LID - 3608
AB  - Tailing sand contains a large number of heavy metals and sulfides that are prone 
      to forming acid mine drainage (AMD), which pollutes the surrounding surface 
      environment and groundwater resources and damages the ecological environment. 
      Microbially induced calcium carbonate precipitation (MICP) technology can 
      biocement heavy metals and sulfides in tailing sand and prevent pollution via 
      source control. In this study, through an unconfined compressive strength test, 
      permeability test, and toxic leaching test (TCLP), the curing effect of MICP was 
      investigated in the laboratory and the effect of grouting rounds on curing was 
      also analyzed. In addition, the curing mechanism of MICP was studied by means of 
      Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), 
      X-ray diffraction spectroscopy (XRD), and scanning electron microscopy (SEM). The 
      experimental results showed that MICP could induce calcium carbonate 
      precipitation through relatively complex biochemical and physicochemical 
      reactions to achieve the immobilization of heavy metals and sulfides and 
      significantly reduce the impact of tailing sand on the surrounding environment.
FAU - Kang, Bo
AU  - Kang B
AD  - School of Resource and Environmental Engineering, Hefei University of Technology, 
      Hefei 230009, China.
FAU - Zha, Fusheng
AU  - Zha F
AD  - School of Resource and Environmental Engineering, Hefei University of Technology, 
      Hefei 230009, China.
FAU - Deng, Weihao
AU  - Deng W
AD  - School of Resource and Environmental Engineering, Hefei University of Technology, 
      Hefei 230009, China.
AD  - State Environmental Protection Key Laboratory of Integrated Surface 
      Water-Groundwater Pollution Control, School of Environmental Science and 
      Engineering, Southern University of Science and Technology, Shenzhen 518055, 
      China.
FAU - Wang, Runkai
AU  - Wang R
AD  - School of Resource and Environmental Engineering, Hefei University of Technology, 
      Hefei 230009, China.
FAU - Sun, Xianguo
AU  - Sun X
AD  - Anhui Huizi Construction Engineering Co., Ltd., Wuhu 241004, China.
FAU - Lu, Zhitang
AU  - Lu Z
AD  - School of Resource and Environmental Engineering, Hefei University of Technology, 
      Hefei 230009, China.
LA  - eng
GR  - 41877262/National Natural Science Foundation of China/
GR  - 42030710/National Natural Science Foundation of China/
GR  - 42107162/National Natural Science Foundation of China/
GR  - 190885QD168/Natural Science Foundation of Anhui Province/
GR  - PA2021 KCPY0055/Fundamental Research Funds for the Central Universities of China/
PT  - Journal Article
DEP - 20220604
PL  - Switzerland
TA  - Molecules
JT  - Molecules (Basel, Switzerland)
JID - 100964009
RN  - 0 (Carbonates)
RN  - 0 (Sand)
RN  - 0 (Sulfides)
RN  - 132N09W4PR (pyrite)
RN  - E1UOL152H7 (Iron)
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - *Calcium Carbonate/chemistry
MH  - Carbonates/chemistry
MH  - Chemical Precipitation
MH  - Iron
MH  - *Sand
MH  - Sulfides/chemistry
PMC - PMC9181912
OTO - NOTNLM
OT  - acid mine drainage (AMD)
OT  - biochemical and physicochemical reactions
OT  - microbially induced calcium carbonate precipitation (MICP)
OT  - source control
COIS- The authors declare no conflict of interest.
EDAT- 2022/06/11 06:00
MHDA- 2022/06/14 06:00
PMCR- 2022/06/04
CRDT- 2022/06/10 01:24
PHST- 2022/04/13 00:00 [received]
PHST- 2022/05/29 00:00 [revised]
PHST- 2022/06/01 00:00 [accepted]
PHST- 2022/06/10 01:24 [entrez]
PHST- 2022/06/11 06:00 [pubmed]
PHST- 2022/06/14 06:00 [medline]
PHST- 2022/06/04 00:00 [pmc-release]
AID - molecules27113608 [pii]
AID - molecules-27-03608 [pii]
AID - 10.3390/molecules27113608 [doi]
PST - epublish
SO  - Molecules. 2022 Jun 4;27(11):3608. doi: 10.3390/molecules27113608.